CVE-2011-1944

Desbordamiento de entero en xpath.c en libxml2 v2.6.x hasta v2.6.32 y v2.7.x hasta v2.7.8, y libxml v1.8.16 y anteriores, permite a atacantes dependientes del contexto, provocar una denegación de servicio (caída) y posiblemente ejecutar código de su elección a través de un archivo XML modificado que provoca un desbordamiento de buffer basado en memoria dinámica cuando se añade un nuevo espacio de nombres al nodo, relacionado con la manipulación de expresiones XPath.

OS X Lion v10.7.4 and Security Update 2012-002 is now available and addresses multiple security issues. An issue existed in the handling of network account logins. The login process recorded sensitive information in the system log, where other users of the system could read it. A temporary file race condition issue existed in blued's initialization routine. There are known attacks on the confidentiality of SSL 3.0 and TLS 1.0 when a cipher suite uses a block cipher in CBC mode. curl disabled the 'empty fragment' countermeasure which prevented these attacks. This issue is addressed by enabling empty fragments. A data injection issue existed in curl's handling of URLs. This issue is addressed through improved validation of URLs. This issue does not affect systems prior to OS X Lion. Various other vulnerabilities have been addressed.